HP DesignJet Z2100 44 User Manual
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Return to default calibration Returning to the default calibration sets all the corrections made by the paper advance calibration to zero. To return to the default paper advance calibration value, you must reset the calibration. 1.Press the Menu key to return to the main menu and select the Image Quality Maintenance menu icon , then Advance > Reset paper advance 2.Wait until the front panel displays the operation has completed successfully before pressing the Back key to return to the main menu. ENWW Recalibrate the paper advance 121 Troubleshooting paper issues
122 Chapter 11 Troubleshooting paper issues ENWW Troubleshooting paper issues
12 Troubleshooting print-quality issues ●General advice ● Print quality troubleshooting wizard ● Horizontal lines across the image (banding) ● Lines are too thick, too thin, or missing ● Lines appear stepped or jagged ● Lines print double or in the wrong colors ● Lines are discontinuous ● Lines are blurred ● The whole image is blurry or grainy ● The paper is not flat ● The print is scuffed or scratched ● Ink marks on the paper ● Edges of objects are stepped or not sharp ● Edges of objects are darker than expected ● Bronzing ● Black and white prints do not look neutral ● Horizontal lines at the end of a cut sheet print ● Vertical lines of different colors ● White spots on the print ● Colors are inaccurate ● The image is incomplete (clipped at the bottom) ● The image is clipped ● Some objects are missing from the printed image ● A PDF file is clipped or objects are missing ● The Image Diagnostics Print ● If you still have a problem ENWW123 Troubleshooting print- quality issues
General advice When you have any print-quality problem: ●To achieve the best performance from your printer, use only genuine manufacturers supplies and accessories, whose reliability and performance have been thoroughly tested to give trouble-free performance and best-quality prints. For details of recommended papers, see Order paper on page 104. ●Make sure that the paper type selected in the front panel is the same as the paper type loaded into the printer. To check this, use the View loaded paper key on the front panel. At the same time, check that the paper type has been calibrated. Also make sure that the paper type selected in your software is the same as the paper type loaded into the printer. CAUTIONIf you have the wrong paper type selected, you could experience poor print quality and incorrect colors, and perhaps even damage to the printheads. ●Check that you are using the most appropriate print-quality settings for your purposes (see Printing on page 41). You are likely to see lower print quality if you have moved the print-quality slider to the Speed end of the scale, or set the custom quality level to Fast. ●Check that your environmental conditions (temperature, humidity) are in the recommended range. See Environmental specifications on page 166. ●Check that your ink cartridges and printheads have not passed their expiration dates: see Maintain the ink cartridges on page 99. Print quality troubleshooting wizard The Print Quality Troubleshooting Wizard can help with the following problems: ●Horizontal lines across the image (banding) ●The whole image is blurry or grainy ●Lines are too thick, too thin, or missing ●Colors are inaccurate To start the wizard: ●From HP Easy Printer Care under Windows: go to the Support tab, and select Print quality troubleshooting. ●From HP Printer Utility under Mac OS: select Support, then Print quality troubleshooting. ●From the Mac OS Print dialog: go to the Services panel, select Device Maintenance, then select Print quality troubleshooting from the list of maintenance tasks. ●From the Embedded Web Server: go to the Support tab, select Troubleshooting, then select Print quality troubleshooting. 124 Chapter 12 Troubleshooting print-quality issues ENWW Troubleshooting print- quality issues
Alternatively, or if you have other print quality problems, you can continue reading this chapter. Horizontal lines across the image (banding) If your printed image suffers from added horizontal lines as shown (the color may vary): 1.Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in your software. To check on the front panel, use the View loaded paper key. 2.Check that you are using appropriate print-quality settings for your purposes (see Printing on page 41). In some cases, you can overcome a print-quality problem merely by selecting a higher print-quality level. For instance, if you have set the Print Quality slider to Speed, try setting it to Quality; if you have already set it to Quality, try selecting custom options and then More Passes. If you change the print-quality settings, you may wish to reprint your job at this point in case the problem has been solved. 3.Print the Image Diagnostics Print. See The Image Diagnostics Print on page 135. 4.If the printheads are working correctly, go to the front panel and press the View loaded paper key to see the paper advance calibration status. If the status is RECOMMENDED, you should perform paper advance calibration: see Recalibrate the paper advance on page 119. ENWW Horizontal lines across the image (banding) 125 Troubleshooting print- quality issues
If the problem persists despite all the above actions, contact your customer service representative for further support. Lines are too thick, too thin, or missing 1.Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in your software. To check on the front panel, use the View loaded paper key. 2.Check that you are using appropriate print-quality settings for your purposes (see Printing on page 41). Select the custom print-quality options in the driver dialog (Mac OS Print dialog), and try turning on the Maximum detail option. You may wish to reprint your job at this point in case the problem has been solved. 3.If the resolution of your image is greater than the printing resolution, you may notice a loss of line quality. You can find the Max. Application Resolution option in the Windows driver dialogs Advanced tab, under Document Options > Printer Features. If you change this option, you may wish to reprint your job at this point in case the problem has been solved. 4.If lines are too thin or missing, print the Image Diagnostics Print. See The Image Diagnostics Print on page 135. 5. If the problem remains, go to the front panel and select the Ink menu icon , then Printhead information to see the printhead alignment status. If the status is PENDING, you should align the printheads. See Align the printheads on page 144. After alignment, you may wish to reprint your job in case the problem has been solved. 6.Go to the front panel and press the View loaded paper key to see the paper advance calibration status. If the status is RECOMMENDED, you should perform paper advance calibration: see Recalibrate the paper advance on page 119. If the problem persists despite all the above actions, contact your customer service representative for further support. Lines appear stepped or jagged If lines in your image appear stepped or jagged when printed: 126 Chapter 12 Troubleshooting print-quality issues ENWW Troubleshooting print- quality issues
1.The problem may be inherent in the image. Try to improve the image with the application you are using to edit it. 2.Check that you are using appropriate print-quality settings. See Printing on page 41. 3.Select the custom print-quality options in the driver dialog (Mac OS Print dialog), and turn on the Maximum detail option. 4.Change your image rendering resolution to 300 dpi or 600 dpi depending on your printing needs. You can find the Max. Application Resolution option in the Windows driver dialogs Advanced tab, under Document Options > Printer Features. Lines print double or in the wrong colors This problem can have various visible symptoms: ●Colored lines are printed double, in different colors. ●The borders of colored blocks are wrongly colored. ENWW Lines print double or in the wrong colors 127 Troubleshooting print- quality issues
To correct this kind of problem: 1.Reseat the printheads by removing them and then reinserting them. See Remove a printhead on page 86 and Insert a printhead on page 88. 2.Align the printheads. See Align the printheads on page 144. Lines are discontinuous If your lines are broken in the following way: 1.Check that you are using appropriate print-quality settings. See Printing on page 41. 2.Reseat the printheads by removing them and then reinserting them. See Remove a printhead on page 86 and Insert a printhead on page 88. 3.Align the printheads. See Align the printheads on page 144. Lines are blurred Humidity can cause ink to soak into the paper, making the lines blurred and fuzzy. Try the following: 1.Check that your environmental conditions (temperature, humidity) are suitable for high-quality printing. See Environmental specifications on page 166. 2.Check that the paper type selected in the front panel is the same as the paper type you are using. To check on the front panel, use the View loaded paper key. 3.Try changing to a heavier paper type, such as HP Heavyweight Coated Paper, HP Super Heavyweight Coated Paper, or Digital Fine Art paper. 4.If you are using glossy paper, try changing to a different type of glossy paper. 128 Chapter 12 Troubleshooting print-quality issues ENWW Troubleshooting print- quality issues
5.Select the custom print-quality options in the driver dialog (Mac OS Print dialog), and turn on the More passes option. 6.Align the printheads. See Align the printheads on page 144. The whole image is blurry or grainy 1.Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in your software. To check on the front panel, use the View loaded paper key. 2.Check that you are printing on the correct side of the paper. 3.Check that you are using appropriate print-quality settings (see Printing on page 41). In some cases, you can overcome a print-quality problem merely by selecting a higher print-quality level. For instance, if you have set the Print Quality slider to Speed, try setting it to Quality; if you have already set it to Quality, try selecting custom options and then More Passes. If you change the print-quality settings, you may wish to reprint your job at this point in case the problem has been solved. 4. Go to the front panel and select the Ink menu icon , then Printhead information to see the printhead alignment status. If the status is PENDING, you should align the printheads. See Align the printheads on page 144. After alignment, you may wish to reprint your job in case the problem has been solved. 5.Go to the front panel and press the View loaded paper key to see the paper advance calibration status. If the status is RECOMMENDED, you should perform paper advance calibration: see Recalibrate the paper advance on page 119. If the problem persists despite all the above actions, contact your customer service representative for further support. The paper is not flat If the paper does not lie flat when it comes out of the printer, but has shallow waves in it, you are likely to see defects in the printed image, such as vertical stripes. This can happen when you use thin paper that becomes saturated with ink. ENWW The whole image is blurry or grainy 129 Troubleshooting print- quality issues
1.Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in your software. To check on the front panel, use the View loaded paper key. 2.Try changing to a thicker paper type, such as HP Heavyweight Coated Paper, HP Super Heavyweight Coated Paper, or thicker Digital Fine Art papers. The print is scuffed or scratched The black ink pigment can be scuffed or scratched when touched by a finger, a pen, or some other object. This is particularly noticeable on coated paper, matte proofing paper, and fine art material. Glossy paper may be extremely sensitive to the basket or to anything else that it contacts soon after printing, depending on the amount of ink used and the environmental conditions at the time of printing. To reduce the risk of scuffs and scratches: ●Handle prints carefully. ●Avoid stacking prints on top of each other. ●Disable the automatic cutter before printing, so that the print will not fall into the basket. See Turn the automatic cutter on and off on page 38. Alternatively, leave a sheet of paper in the basket so that freshly printed sheets do not make direct contact with the basket. Ink marks on the paper This problem can occur for several different reasons. Horizontal smears on the front of coated paper If a lot of ink is used on plain or coated paper, the paper absorbs the ink quickly and expands. As the printheads move over the paper, the printheads may come into contact with the paper and smear the printed image. This problem is normally seen only on cut sheets of paper (not on roll paper). 130 Chapter 12 Troubleshooting print-quality issues ENWW Troubleshooting print- quality issues